#region License
/* FNA - XNA4 Reimplementation for Desktop Platforms
 * Copyright 2009-2014 Ethan Lee and the MonoGame Team
 *
 * Released under the Microsoft Public License.
 * See LICENSE for details.
 */

/* Derived from code by the Mono.Xna Team (Copyright 2006).
 * Released under the MIT License. See monoxna.LICENSE for details.
 */
#endregion

#region Using Statements
using System;
using System.Collections;
using System.Collections.Generic;
#endregion

namespace Microsoft.Xna.Framework
{
	public class CurveKeyCollection : ICollection<CurveKey>, IEnumerable<CurveKey>, IEnumerable
	{
		#region Public Properties

		public int Count
		{
			get
			{
				return innerlist.Count;
			}
		}

		public bool IsReadOnly
		{
			get
			{
				return this.isReadOnly;
			}
		}

		public CurveKey this[int index]
		{
			get
			{
				return innerlist[index];
			}
			set
			{
				if (value == null)
				{
					throw new ArgumentNullException("value");
				}

				if (index >= innerlist.Count)
				{
					throw new IndexOutOfRangeException();
				}

				if (MathHelper.WithinEpsilon(innerlist[index].Position, value.Position))
				{
					innerlist[index] = value;
				}
				else
				{
					innerlist.RemoveAt(index);
					innerlist.Add(value);
				}
			}
		}

		#endregion

		#region Private Fields

		private bool isReadOnly = false;
		private List<CurveKey> innerlist;

		#endregion

		#region Public Constructors

		public CurveKeyCollection()
		{
			innerlist = new List<CurveKey>();
		}

		#endregion

		#region Public Methods

		public void Add(CurveKey item)
		{
			if (item == null)
			{
				throw new ArgumentNullException("item");
			}

			if (innerlist.Count == 0)
			{
				this.innerlist.Add(item);
				return;
			}

			for (int i = 0; i < this.innerlist.Count; i += 1)
			{
				if (item.Position < this.innerlist[i].Position)
				{
					this.innerlist.Insert(i, item);
					return;
				}
			}

			this.innerlist.Add(item);
		}

		public void Clear()
		{
			innerlist.Clear();
		}

		public CurveKeyCollection Clone()
		{
			CurveKeyCollection ckc = new CurveKeyCollection();
			foreach (CurveKey key in this.innerlist)
			{
				ckc.Add(key);
			}
			return ckc;
		}

		public bool Contains(CurveKey item)
		{
			return innerlist.Contains(item);
		}

		public void CopyTo(CurveKey[] array, int arrayIndex)
		{
			innerlist.CopyTo(array, arrayIndex);
		}

		public IEnumerator<CurveKey> GetEnumerator()
		{
			return innerlist.GetEnumerator();
		}

		public int IndexOf(CurveKey item)
		{
			return innerlist.IndexOf(item);
		}

		public bool Remove(CurveKey item)
		{
			return innerlist.Remove(item);
		}

		public void RemoveAt(int index)
		{
			innerlist.RemoveAt(index);
		}

		IEnumerator IEnumerable.GetEnumerator()
		{
			return innerlist.GetEnumerator();
		}

		#endregion
	}
}
